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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
estrous
Reasons for gestation length being affected
urethra
mare gestation
2. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
Reasons for gestation length being affected
kidney stones also called ________ ___________ can develop in the sigmoid flexure
ewe estrus cycle
Grading choice
3. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
accessory sex glands
reason for seasonal breeding periods
dartos muscle
things to check for in a breeding soundness exam (BSE)
4. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
colostrum
leydid or interstitial cells
libido test (BSE)
pelvis
5. Luteolysis happens because of the ____________ hormone
ewe estrus
prostaglandin
cervix
cowper's gland
6. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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7. When are steers and heifers weaned from bottle feeding?
Holstein Cow
sow gestation
ewe estrus
6-8 weeks
8. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
semen evaluation (BSE)
epididymis: definition - 3 parts - 4 functions
reasons for castration
monorchid
9. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
mare gestation
Sperm growth rate
prostaglandin
rectal palpation (BSE)
10. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
behavioral signs of estrus
Hormones from both the fetus and the mom.
penis sizes vs delivering methods
stag
11. Milk ~305 days - dry 60 days prior to calving
ewe estrus
Dairy Cattle milking schedule
Brown Swiss Cow
Brown Swiss Cow
12. Provide nourishment for the developing sperm
Sperm growth rate
sertoli cells
ewe ovulation
Sperm survival specs
13. ~60 days before calving
dry-off time in dairy cattle
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Sperm growth rate
estrous
14. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
Follical Stimulating in males
Sperm survival specs
monestrous
epididymis: definition - 3 parts - 4 functions
15. 30-38 hours after estrus cycle begins
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
Follical Stimulating in females
sow ovulation
testosterone
16. Contains and regulates the temp of the testes for sperm production
penis and prepuce observation (BSE)
monorchid
#1 cost in production
scrotum
17. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
functions of progestrone
femininity of a heifer
hormones
uterus
18. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
things to check for in a breeding soundness exam (BSE)
cow gestation
4 major reasons for culling dairy cows
retractor muscles
19. Duct through penis that carries sperm and urine
hormones
Lutinizing Hormone in females
urethra
Hormones from both the fetus and the mom.
20. Why Dairy calves are fed powdered milk.
sow estrus cycle
~1 month
1. more cost effective - 2. powdered milk is in excess production
penis and prepuce observation (BSE)
21. Start of the reproductive tract for the female. located outside of the body
vulva
Dairy Cattle Lactation (standard)
ewe estrus cycle
retractor muscles
22. (LH) causes female's egg to break (her period)
Lutinizing Hormone in females
effects of BST
cow estrus cycle
kidney stones also called ________ ___________ can develop in the sigmoid flexure
23. Sperm production
spermatogenesis
epididymis: definition - 3 parts - 4 functions
monestrous
sigmoid flexure
24. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
reason for seasonal breeding periods
Sperm growth rate
cow estrus cycle
Hormones from both the fetus and the mom.
25. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
testis (gonads)
mare gestation
sow estrus cycle
butterfat
26. Failure to have one testis (gonad) to descend
dairy cattle pregnancy check
cow estrus
monorchid
penis proper
27. Not under a timeline - cow can not be sold as steak
Grading choice
behavioral signs of estrus
Follical Stimulating in males
dry matter and water
28. (male) pushes the testes outward toward the legs for a cool-down off of the body
cremaster muscle
dartos muscle
urethra
mare's estrous cycle
29. Help to signal hormone levels which we need both in the brain right next to each other.
hypothalamus and pituitary gland
libido test (BSE)
retractor muscles
sperm cell
30. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
Hormones from both the fetus and the mom.
rectal palpation (BSE)
Sperm growth rate
eminal vesicles
31. Important 'landmark' during palpation
cervix
prostaglandin
humans: stress level vs sperm
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
32. Animals which have many estrous periods per year (ex: cow - sow)
Blood
polyestrous
cryptorchid
Holstein Cow
33. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
behavioral signs of estrus
mare estrus
elastrator
penis and prepuce observation (BSE)
34. Depository for semen during insemination. where urine leaves the body
what has to happen for males for copulation to occur
vagina
~1 month
effects of BST
35. Actual heat cycle (period)
estrus
effects of estrogen
rectal palpation (BSE)
elastrator
36. Milk ~305 days - dry 60 days prior to calving
things to check for in a breeding soundness exam (BSE)
growth lost from castration methods (knife & band)
Dairy Cattle milking schedule
seminiferous tubules
37. Way to know everything is alright with the breeding male
estrus
stag
sperm cell
purpose of Breeding Soundness Exam (BSE) for males
38. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
~1 month
feeding a high producing dairy cow
Sperm growth rate
dry-off time in dairy cattle
39. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
prostaglandin
epididymis: definition - 3 parts - 4 functions
scrotal circumference (BSE)
vulva
40. Failure to have both testis (gonads) descend
Dairy Cattle milking schedule
cryptorchid
oviducts
vulva
41. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
estrous
Dairy Cattle Gestation
Grading choice
mastitis
42. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
scrotum
seasonally polyestrous
sow estrus
ewe gestation
43. 4-6 days
Holstein Cow
vulva
Jersey Cow
mare estrus
44. 30-38 hours after estrus cycle begins
effects of BST
sow ovulation
ewe estrus cycle
sow estrus cycle
45. 336 days
mare gestation
ewe's estrous cycle
urethra
cowper's gland
46. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
oviducts
Lutinizing Hormone in females
why does the cow need fat deposits during pregnancy?
Holstein Cow
47. Not under a timeline - cow can not be sold as steak
effects of estrogen
Grading choice
what has to happen for males for copulation to occur
what has to happen for males for copulation to occur
48. Days which have increasing daylight hours
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49. (LH) causes female's egg to break (her period)
femininity of a heifer
cremaster muscle
hypothalamus and pituitary gland
Lutinizing Hormone in females
50. Animal which has been castrated after puberty
mare gestation
sow estrus cycle
stag
Grading choice